Concurring with @Dave Loudin, combining antennas with a broadband combiner such as the CC-7870 and reversed splitters, almost always produces mixed/disappointing results. Maybe one or two signals can be improved, but very often at the expense of others that were fine before trying to add signals together. Unless you use expensive filters on each antenna, desired signal from one will be combined with interference from the other antenna. Tinlee.com is one of the few remaining sources of filtered passive antenna combiners.
An A/B switch is a valid option. Alternately, many TV's have more than one auxiliary video input. If this is true in your case, you could opt to add a second tuner/converter. http://forum.tvfool.com/showthread.php?t=2882
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If the well is dry and you don't see rain on the horizon, you'll need to dig the hole deeper. (If the antenna can't get the job done, an amp won't fix it.)
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Last edited by GroundUrMast; 1-May-2012 at 5:33 PM.
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